CN110628165A - Semitransparent thermoplastic elastomer for encapsulation and preparation process thereof - Google Patents
Semitransparent thermoplastic elastomer for encapsulation and preparation process thereof Download PDFInfo
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- CN110628165A CN110628165A CN201910914415.2A CN201910914415A CN110628165A CN 110628165 A CN110628165 A CN 110628165A CN 201910914415 A CN201910914415 A CN 201910914415A CN 110628165 A CN110628165 A CN 110628165A
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- thermoplastic elastomer
- seps
- sbc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
Abstract
The invention discloses a semitransparent thermoplastic elastomer capable of being used for encapsulation and a preparation process thereof, wherein the thermoplastic elastomer comprises SEEPS, SEPS, SBC, mineral oil, POP, aromatic hydrocarbon resin and an antioxidant; the thermoplastic elastomer comprises, by weight, 20-40 parts of the SEEPS, 10-20 parts of the SEPS, 10-30 parts of the SBC, 20-50 parts of the mineral oil, 5-10 parts of the POP, 5-10 parts of the aromatic hydrocarbon resin and 0.2-0.6 part of the antioxidant; the preparation process comprises the following steps: putting SEEPS, SEPS, SBC, mineral oil, POP, aromatic hydrocarbon resin and antioxidant into a mixer for premixing; adding the premixed raw materials into a double-screw extruder, mixing, extruding and cooling, wherein the mixing temperature is 200 ℃; the cooled product was cut into pellets using a pelletizer. The product has low hardness and high light transmittance.
Description
Technical Field
The invention relates to the field of high polymer materials, in particular to a semitransparent thermoplastic elastomer for encapsulation and a preparation process thereof.
Background
There are many kinds of transparent or translucent elastomers on the market at present, but PC or ABS can be coated with high transparency, and elastomers having hardness of less than 50A are not common.
Elastomers which achieve transparency or translucency are predominantly styrene-based and polyurethane-based elastomers. Styrenic elastomers can achieve very low hardness and maintain clarity, but can only be encapsulated with PP; the polyurethane elastomer can also reach higher transparency, can be encapsulated with PC and ABS, but the general hardness is rarely below 50A, and the transparent TPU is easy to turn yellow, and the yellowing-resistant TPU is high in price and the like. If materials with lower hardness, higher transparency and the ability to encapsulate PC and ABS could be developed, more options would be offered for the industrial design of encapsulated products.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides a semitransparent thermoplastic elastomer for encapsulation and a preparation process thereof, and the semitransparent thermoplastic elastomer is low in hardness and high in light transmittance.
In order to achieve the purpose, the embodiment of the application discloses a translucent thermoplastic elastomer capable of being used for encapsulation, which is characterized in that the thermoplastic elastomer comprises SEEPS, SEPS, SBC, mineral oil, POP, aromatic hydrocarbon resin and an antioxidant; the thermoplastic elastomer comprises, by weight, 20-40 parts of the SEEPS, 10-20 parts of the SEPS, 10-30 parts of the SBC, 20-50 parts of the mineral oil, 5-10 parts of the POP, 5-10 parts of the aromatic hydrocarbon resin and 0.2-0.6 part of the antioxidant.
Preferably, the part of the SEEPS is 27 parts.
Preferably, the part of the SEPS is 11 parts.
Preferably, the SBC is 12 parts.
Preferably, the part of the mineral oil is 43 parts.
Preferably, the POP is 5 parts.
Preferably, the aromatic hydrocarbon resin is 5 parts.
Preferably, the part of the antioxidant is 0.2 part.
The embodiment of the application discloses a preparation process of a semitransparent thermoplastic elastomer for encapsulation, which is characterized by comprising the following steps of:
putting SEEPS, SEPS, SBC, mineral oil, POP, aromatic hydrocarbon resin and antioxidant into a mixer for premixing;
adding the premixed raw materials into an extruder (which is the proper screw combination), mixing, extruding and cooling, wherein the mixing temperature is 200 ℃;
the cooled product was cut into pellets using a pelletizer.
The invention has the following beneficial effects:
1. the product has low hardness which can reach below 45A, and can be encapsulated with PC and ABS;
2. the light transmittance is high, and the light transmittance of the material with the thickness of 3.2 mm can reach more than 60%.
In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to achieve the above purpose, the invention provides a translucent thermoplastic elastomer for encapsulation and a preparation process thereof, which is characterized in that the thermoplastic elastomer comprises SEEPS, SEPS, SBC, mineral oil, POP, aromatic hydrocarbon resin and an antioxidant; the thermoplastic elastomer comprises, by weight, 20-40 parts of the SEEPS, 10-20 parts of the SEPS, 10-30 parts of the SBC, 20-50 parts of the mineral oil, 5-10 parts of the POP, 5-10 parts of the aromatic hydrocarbon resin and 0.2-0.6 part of the antioxidant.
Further, the part of the SEEPS is 27 parts.
Further, the part of the SEPS is 11 parts.
Further, the SBC is in 12 parts.
Further, the part of the mineral oil is 43 parts.
Further, the POP is 5 parts.
Further, the aromatic hydrocarbon resin is 5 parts.
Furthermore, the part of the antioxidant is 0.2 part.
The invention provides a preparation process of a semitransparent thermoplastic elastomer for encapsulation, which is characterized by comprising the following steps of: putting SEEPS, SEPS, SBC, mineral oil, POP, aromatic hydrocarbon resin and antioxidant into a mixer for premixing;
adding the premixed raw materials into a double-screw extruder, mixing, extruding and cooling, wherein the mixing temperature is 200 ℃;
the cooled product was cut into pellets using a pelletizer.
Example 1
Putting 27 parts of SEEPS, 11 parts of SEPS, 12 parts of SBC, 43 parts of mineral oil, 4.4 parts of POP, 4.4 parts of aromatic hydrocarbon resin and 0.2 part of antioxidant into a mixer for premixing;
further, adding the premixed raw materials into a double-screw extruder, mixing, cooling, and granulating by using a granulator to obtain product particles, wherein the mixing temperature is 200 ℃.
And (3) carrying out various performance tests on the product particles, wherein the test standards are as follows:
the test data obtained are shown in Table 1
TABLE 1
According to test data, the hardness of the product obtained by the embodiment is low and can reach 38A, and the product can be encapsulated with PC and ABS; the light transmittance is high, and the light transmittance of the material with the thickness of 3.2 mm can reach 63%.
Example 2
Placing 27.5 parts of SEEPS, 12 parts of SEPS, 10 parts of SBC, 40 parts of mineral oil, 5 parts of POP, 5.3 parts of aromatic hydrocarbon resin and 0.2 part of antioxidant into a mixer for premixing;
further, adding the premixed raw materials into a double-screw extruder, mixing, cooling, and granulating by using a granulator to obtain product particles, wherein the mixing temperature is 200 ℃.
The test data obtained are shown in Table 2
TABLE 2
According to test data, the hardness of the product obtained by the embodiment is low and can reach 42A, and the product can be encapsulated with PC and ABS; the light transmittance is high, and the light transmittance of the material with the thickness of 3.2 mm can reach 61%.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A translucent thermoplastic elastomer useful for encapsulation, said thermoplastic elastomer comprising SEEPS, SEPS, SBC, mineral oil, POP, aromatic hydrocarbon resins, and antioxidants; the thermoplastic elastomer comprises, by weight, 20-40 parts of the SEEPS, 10-20 parts of the SEPS, 10-30 parts of the SBC, 20-50 parts of the mineral oil, 5-10 parts of the POP, 5-10 parts of the aromatic hydrocarbon resin and 0.2-0.6 part of the antioxidant.
2. A translucent encapsulating thermoplastic elastomer as claimed in claim 1, characterised in that said SEEPS is present in 27 parts.
3. A translucent encapsulating thermoplastic elastomer as claimed in claim 1, characterised in that the SEPS is present in 11 parts.
4. A translucent encapsulating thermoplastic elastomer as claimed in claim 1 wherein the SBC is present in 12 parts.
5. A translucent encapsulating thermoplastic elastomer as claimed in claim 1 wherein the mineral oil is present in 43 parts.
6. A translucent encapsulating thermoplastic elastomer as claimed in claim 1, characterised in that the part of POP is 5 parts.
7. A translucent encapsulating thermoplastic elastomer as claimed in claim 1 wherein the portion of said aromatic hydrocarbon resin is 5 parts.
8. A translucent encapsulating thermoplastic elastomer as claimed in claim 1 wherein the antioxidant is present in an amount of 0.2 parts.
9. A process for the production of a translucent encapsulating thermoplastic elastomer according to any one of claims 1 to 8, comprising the steps of:
putting SEEPS, SEPS, SBC, mineral oil, POP, aromatic hydrocarbon resin and antioxidant into a mixer for premixing;
adding the premixed raw materials into a double-screw extruder, mixing, extruding and cooling, wherein the mixing temperature is 200 ℃;
the cooled product was cut into pellets using a pelletizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910914415.2A CN110628165A (en) | 2019-09-26 | 2019-09-26 | Semitransparent thermoplastic elastomer for encapsulation and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910914415.2A CN110628165A (en) | 2019-09-26 | 2019-09-26 | Semitransparent thermoplastic elastomer for encapsulation and preparation process thereof |
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| CN110628165A true CN110628165A (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910914415.2A Pending CN110628165A (en) | 2019-09-26 | 2019-09-26 | Semitransparent thermoplastic elastomer for encapsulation and preparation process thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101688049A (en) * | 2007-07-09 | 2010-03-31 | 伊士曼化工公司 | Performance additives for thermoplastic elastomers |
| CN102869504A (en) * | 2010-04-22 | 2013-01-09 | 科腾聚合物美国有限责任公司 | High tensile strength article with elastomeric layer |
-
2019
- 2019-09-26 CN CN201910914415.2A patent/CN110628165A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101688049A (en) * | 2007-07-09 | 2010-03-31 | 伊士曼化工公司 | Performance additives for thermoplastic elastomers |
| CN102869504A (en) * | 2010-04-22 | 2013-01-09 | 科腾聚合物美国有限责任公司 | High tensile strength article with elastomeric layer |
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Application publication date: 20191231 |
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